7
KDC-BT40U/BT645U
KDC-U546BT
MICROCOMPUTER’S TERMINAL DESCRIPTION
Pin No.
Pin Name
I/O
Application
Truth Value
Table
Processing / Operation / Description
87
PWIC MUTE
O
Power IC mute
STANDBY source or momentary power-down: L,
TEL mute: L
88
NC
-
Not used
Output L
fi
xed
89
PWIC STBY
O
Power IC standby control
POWER ON: H, POWER OFF: L
90
MUTE
I/O Mute
L: Mute OFF, Hi-Z: Mute ON
91
LX MUTE
I
Mute request from slave unit
H: Mute ON, L: Mute OFF
92
LX CON
O
Start-up request to slave unit
H: Slave unit ON, L: Slave unit OFF
93
LX RST
O
Forced reset to slave unit
H: Reset, L: Normal
94
AVSS
-
95
LX REQ M
O
Communication request to slave unit
96
VREF
-
97
AVCC
-
98
LX DATA S
I
Data from slave unit
99
LX DATA M
O
Data to slave unit
100
LX CLK
I/O LX-BUS clock
• Truth value table
q
CD motor control
CD MOTOR (Pin 56)
CD LOEJ (Pin 57)
Stop
L
L
Load
H
L
Eject
H
H
Brake
H
Hi-z
w
Power supply IC (IC4) control
SEL1 (Pin 10)
PS1-2
PS1-3
PS2-1
ILLUMI
P-CON
P-ANT
L
L
L
OFF
OFF
OFF
L
L
H
ON
OFF
OFF
H
L
H
ON
ON
OFF
H
H
H
ON
ON
ON
SEL2 (Pin 11)
PS1-1
PS2-2
AUDIO/SW5
AM
L
L
OFF
OFF
H
L
ON
OFF
H
H
ON
ON
